//
//  URLConvertible.swift
//  Tiercel
//
//  Created by Daniels on 2019/5/14.
//  Copyright © 2019 Daniels. All rights reserved.
//
//  Permission is hereby granted, free of charge, to any person obtaining a copy
//  of this software and associated documentation files (the "Software"), to deal
//  in the Software without restriction, including without limitation the rights
//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//  copies of the Software, and to permit persons to whom the Software is
//  furnished to do so, subject to the following conditions:
//
//  The above copyright notice and this permission notice shall be included in
//  all copies or substantial portions of the Software.
//
//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
//  THE SOFTWARE.
//

import Foundation

public protocol URLConvertible {

    func asURL() throws -> URL
}

extension String: URLConvertible {
    
    public func asURL() throws -> URL {
        guard let url = URL(string: self) else { throw TiercelError.invalidURL(url: self) }
        
        return url
    }
}

extension URL: URLConvertible {

    public func asURL() throws -> URL { return self }
}

extension URLComponents: URLConvertible {

    public func asURL() throws -> URL {
        guard let url = url else { throw TiercelError.invalidURL(url: self) }
        
        return url
    }
}
